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util.ip: Make bit string function into a method

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Kim Alvefur 2017-12-01 04:37:33 +01:00
parent 0152e8b7c6
commit e9e827557b
1 changed files with 9 additions and 7 deletions
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16
util/ip.lua
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@ -51,12 +51,7 @@ local function new_ip(ipStr, proto)
return setmetatable({ addr = ipStr, packed = packed, proto = proto, zone = zone }, ip_mt);
end
local function toBits(ip)
local result = "";
local fields = {};
if ip.proto == "IPv4" then
ip = ip.toV4mapped;
end
function ip_methods.bits(ip)
ip = (ip.addr):upper();
ip:gsub("([^:]*):?", function (c) fields[#fields + 1] = c end);
if not ip:match(":$") then fields[#fields] = nil; end
@ -77,8 +72,15 @@ local function toBits(ip)
return result;
end
function ip_methods.bits_full(ip)
if ip.proto == "IPv4" then
ip = ip.toV4mapped;
end
return ip.bits;
end
local function commonPrefixLength(ipA, ipB)
ipA, ipB = toBits(ipA), toBits(ipB);
ipA, ipB = ipA.bits_full, ipB.bits_full;
for i = 1, 128 do
if ipA:sub(i,i) ~= ipB:sub(i,i) then
return i-1;